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No. 586,757. Patent (1 July 20,1

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UNITEn STATES DAVID O. BOOTH AND CLAUDE E. DAVISSON, OF MOUNT CLAREPATENT OFFICE.

VEST VIRGINIA.

LOCK.

SPECIFICATION forming part of Letters Patent No. 586,757, dated July 20,1897.

Application filed March 3, 1897. Serial No. 625,841. (No model.)

To (all 1070mm it may concern:

Be it known that we, DAVID O. BOOTH and CLAUDE E. DAVISSON, citizens ofthe United States, residingat Mount Clare, in the county of Harrison,State of lVest Virginia, have invented certain new and usefulImprovements in Locks, of which the following is a specification,reference being had therein to the accompanying drawings.

This invention relates to a lock or door-securing device which comprisesa bar or bars extending completely across the door and removably securedin housings fastened to the door-casing or wall on either side of thedoor.

Among the principal objects of the invention is to provide a securingdevice for a door which operates upon the principle of the well-knownbar which is often employed and which extends completely across thedooropening when the door is closed and serves to secure it from beingopened by unauthorized persons. Experience has shown that a barcompletely crossing a door is a greater safeguard against burglary thanlocks or other door-securing devices.

Other objects and advantages of the invention will be set forth in thefollowing description, and the novel features thereof will beparticularly pointed out in the claims.

Referring to the drawings, Figure 1 is a perspective of a door providedwith a securing device constructed in accordance with our invention.Fig. 2 is a rear plan of the lock portion proper of the device. Fig. 3is a detail in perspective of a combined springlatch and tumbleremployed with the latter. Fig. & is a modification.

Like letters refer to like parts in all figures of the drawings.

A represents the case or body portion of the lock, which may be struckup in sheet metal or formed of separate parts, constituting a frame aand a facing, and, if desired, a backing-plate a, the whole securedtogether and to the door by screws or bolts passing through perforationsa B represents a portion of the door-securing bar which constitutes thebolt of the lock. B represents the remaining portion of said bar and hasone end thereof secured to the lock-case in any suitable manner or,asshown, by screws 1). The outer end 11 of the section B of the bar ischamfered or rounded 01f, so as to readily enter the housing C at thehinge side of the door. A housing C is secured to the wall or casing atthe opposite side of the door to receive the outer end of the section Lof the bar or bolt of the lock. Openings a are formed in the lock-casefor the passage therethrough of the bar-section.

The bar-section B is notched, as at B and B for the reception andoperation of the blade E of the key E, which is introduced into the casethrough the keyhole E If desired, a keyhole may be formed through thedoor itself, so that the movable section of the bar may be operatedbymeans of a key from the outside, but in cases of greater securitythere is to be no keyhole accessible from the outside. The blade E ofthe key E is provided with a step E, which is designed to lift thetumbler-ward F during the rotation of the key, and as the saidtumbler-ward is secured to or formed asa part of the spring-latch andtumbler G the lifting of said tumbler-ward lifts the latch G from itsnormal position, while a further rotation of the key and its blade, thelatter taking into the notch B of the barsection, reciprocates saidbar-section to lock and unlock or to insert or remove said bar-sectionfrom the housing C. The springlatch also constitutes a spring-tumbler inwhich the horizontal portion forms a fence and the depending portion F atumbler-ward to lie in the recess of the bar portion. WVhen the door islocked, the latch G takes a holding contact against the inner end of themovable section B of the bar, thus preventing an unlocking reciprocationthereof Without a key adapted to operate the tumbler-Ward. So, also, thelatch G, when the bar is unlocked, rests in a latch-seat B to retain thebar in an unlocked position, from which it might be thrown bycentrifugalforce when opening or closing the door or otherwise accidentally. Thespring is secured to the vertical Wall of the casing by screws or rivetsG and is bent at right angles to bring it parallel with the movablebar-section, while the tumbler-ward is arranged at a right angle to thespring and is thus brought into proper relation to the keyhole to beoperated upon by the key. The bar-section B is also recessed, as at B toprovide a space for the tumbler-ward F within the thickness of the bar,and thus reducing the necessary thickness of the lock -case. The endwalls of the recessB will limit the movement of the bar as the wallswill engage the depending tumbler-ward F at the extreme points ofmovement in either direction. This prevents the bolt being thrown, sothat the latch-seat B will pass beyond the latch-point of the tumbler.By the engagement of the end walls with the tumbler the bar B will bestopped in its movement, so that the latchseat and latch will be inproper position to engage each other. By reference to Fig. 4 it will beseen that both bar-sections may be reciprocated into their housings bysimply duplicating the key, tumbler-ward, and latchnotches of the barand blade of the key and also arranging the section B below the keyholeinstead of locating the section B in line with the section B of the bar,all as shown in Fig. 4.

It is clearly understood that by rotating the key from left to right, asshown in Fig. 2, the bar-section B is reciprocated to the right tounlock the same, the key-notches in the unlocked position assuming theposition indicated by dotted lines in Fig. 2, so that upon the rotationin the opposite direction of the key the bar-section is thrown to theleft or into its locked position. In the modification the duplication ofthe parts is such that while the blades of the key are rotating in onedirection they reciprocate an adjacent bar-section outwardly to lock thesame, and when rotated in the opposite direction the bars arereciprocated to unlock the same, the duplicate tumblers andspring-latches serving the same functions as where but one of thebarsctions is reciprocated. In this modification it is not necessary tobevel the outer end of either bar-section, and in accurate work suchnecessity does not positively exist where one of the bar-sections isfixed to the case.

By our invention we are enabled at a minimum expense to provide a mostserviceable and reliable securing device, and Where it is adapted foruse inside only it serves an extremely safe device for closing the doorsof stores, factories, and other establishments, especially such doors asare not ordinarily used for common entrance and exit.

What we claim is 1. Adoor-securing device comprising a casing, a barsecured to said casing, a bar-section mounted to reciprocate in saidcasing and provided with key-receiving bar-operating notches, andhousings secured at opposite sides of the door on the casing or wall toreceive the ends of said bars, substantially as specified. Y

2. A door-securin g device comprising a bar extending across the doorand formed in sections one of which is secured to a case and the otherterminating within a case secured to the door, one of said sectionsbeing provided with key-receiving and bar-operating notches, aspring-latch within the casing for maintaining the bar in a desiredposition and a tumbler upon the latch and extending into the'path of theblade of the key, substantially as specified.

3. In a door-securing device, the combination of a case, aspring-tumbler secured to the case and provided with a tumbler-warddepending therefrom, a bar provided with a recess having opposite wallsbetween which said ward extends and which limit the movement of the bar,bar-operating notches, and a tumbler-seat upon the bar, substantially asspecified.

DAVID O. BOOTH. CLAUDE E. DAVISSON.

Witnesses:

I. H. LAWsoN, D. K. REED.

